Question about Denon DRA-397

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Panel lock touch any button on the unit and it says panel do disable this feature?

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Re: panel lock

Press mode and speaker b while turning the receiver on. the reset the processor..

Posted on May 15, 2008

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How do I disabled the standby on my onkyo av receiver TX-SR607

Hi Ms Cazarez, all of our receiver go to standby when powered off as such there is not way to disable the feature unless you just unplug the unit form the AC outlet, Thanks, JT

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Power problem

If the protect function works but is causing you problems, cancelling the protection function should help, and it will be possible to enter the self-diagnostic function mode. This should disable all functions of the protection mode, excluding the 'excess electrical current detection' feature.

While pressing the "Tone Control" and "Info" keys, try pressing the power key to turn on the power. Keep pressing those 2 keys for 3 seconds longer.

this should activate the Self Diagnostic function, with your Protection Mode disabled.

in this mode the 'sleep' section on the tv's fluorescent display flashes to indicate that the mode is properly activated.

just be very aware, this function is normally there as a safety feature and i cant guarantee that disabling it altogether won't cause other problems down the road. best of luck!

Jun 06, 2014 | Yamaha Audio & Video Receivers

1 Answer

The scren says panel lock on. how do i get out of this mode

Denon panel lock was not supposed to be supported on this model, somehow yours is. We need to reset the microprossessor.
as denon manual states:
switch off the unit by pressing power.
keep both speaker a and b pressed and turn on the unit by pressing power.
check that the entire display is flashin at 1 sec intervals and release buttons.
the mircoprossor has been reset.
if step 3 does not work start over again.
the receiver will go back to factory defaults.
let us know if further troubleshooting is needed.


Feb 15, 2010 | Denon DRA-397

1 Answer

It keeps blinking "PROTECT" and we are getting no sound. Sony receiver

Make sure none of the speaker wires are crossed I have the same reciever and it did this to me once. I checked the back of it and the wires were touching its a feature to protect itself from shorting out. If there are no wires crossed id reccomend trying to reset the unit by holding down video and cd then pressing the power button. The screen should say FACTORY which means its been reset. Good luck and hope this helps.

Nov 13, 2009 | Sony STR-DE545 Receiver

1 Answer

Denon DRA397 Panel lock on.


Denon has for some reason removed this function from their user manuals. However The manual does show how to do a manual reset of the unit. This may correct the issue.

With the Amp OFF but plugged in, press and hold the speaker A and B buttons and while still holding them press the POWER button. Continue to hold the speaker buttons for another second or so. The display should all light up and flash at 1-second intervals. If not flashing, try again.

This should reset the unit back to factory state with the front panel lock disabled.

Jul 07, 2009 | Denon DRA-397

1 Answer

Panel Lock On. How can I turn it off?

make sure unit is off then hold down spker b and mode buttons and then turn it on

May 17, 2008 | Audio & Video Receivers

1 Answer

TX-SR800 circuitry protection activated

You maybe got to change the ICs audio amplifiers of the receiver they are damaged.

Apr 06, 2008 | Onkyo TX-8511 Receiver

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Slight bump, no sound

The problem's fixed, and it was actually a very simple matter. When I bumped the receiver against the shelf (and the carpet) I must have hit the 'Speaker A' button on the front panel, causing the speakers to be de-selected and hence no sound to be heard. I realized this was the problem when I unplugged the speakers and tried them in the Speaker B slots and they worked. Then I put them back in the A section and pushed the button and voila - fixed!

Apr 04, 2008 | NAD C720BEE Receiver

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Panel lock on dra 397

Speaker B and Mode buttons held down simultaneously while engaging master power, unlocked my DRA-397. Thanks!!!!

Dec 02, 2007 | Denon DRA-397

1 Answer

Help front panel wont work and treble +10 keeps coming up by itself

Check all of the push buttons on the front panel.. I have seen that sometimes a switch could have gotten jammed or pushed an and broken and the button gets stuck and wont let anything else work

Sep 21, 2006 | Yamaha HTR-5650 Receiver

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